Cotton-gin



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J. D. MILBURN.

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GoTToN-GIN.

Patented Mar.27,1883

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GoTToN GIN. No. 274,806. Patented Mar. 27,1883.

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PATENT Orino JOHN D. MILBURN, OF MEMPHIS, TENNESSEE.

COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 274,806, dated March27, 11883.

Application filed February 1, 1883. (No model.) Y e To all lwhom 'it mayconcern:

Be it known that'I, JOHN D. MILBUEN, a

citizen of the United States, residing at Meinphis, in the county ofShelby Vand State of Tennessee, have invented new and usefulImprovements in Gotton-Gins. ot' which the following is a specification.

, The present invention relates to that class of cotton-gins known asunder-feed gins,

which are provided with an outer and an inner roll-box, the former forseparating the hulls and theinner one for separating the seed from thecotton. Cotton-gms of this description are usually provided with aninner adjustable seedboard, which extends from a feedopening or `hingedlid, and terminates in proximity to the grate or ribs of the machine forforming the roll-boxes between said ribsand an outer l and to produce asuperior quality of lint and cleanness of seed from bully and trashycotton than has ever been effected by any single breasted gin whichfeeds directly into the rollbox. I accomplish these resultsby having inplace of lthe usual adjustable seed-board a series ofhorizontal rollers,which are arranged in a curved line, a second series of rollers beinglocated at the back side ofthe seed-rolls. In connection with therollers arrangedin this manner, I locate at the bottom of the cottonbox,between the outer front board andthe ribs, the customary rollers forhullin g the cotton and discharging the `hulls and trash from thecotton-box. l

In the drawings, Figures 1 and 2 are end views 'cfa cotton-gin embracingmy improvements. Fig, 3 is a longitudinal sectional view. Fig. 4 is afront elevation, the breast-board being broken away to show thearrangement of parts in rear thereof.

D, instead of being a stationary board or sur'- face, is formed of aseries of horizontal rollers, E, which turn in bearings in the sides ofthe cotton-box, and are arranged in acnrved line, as shown. The frontwall of the inner roll-box is in ordinary gins formed of the so calledseedboard,7 Whereas in the presentinvention I make use of a series ofhorizontal rollers, G, which are arranged close together in a curvedline, commencing at a point opposite the ordinary knuckles orprojections on the ribs and terminating at the front of the feed-openingor the hinged lid F, which serves to close the same; The various rollersconstitute an inner roll-box having front and rear movable walls, thecurvature whereof will easily ada-pt itself to the cotton-roll containedtherein. Arollbox of the character described is admirably adapted foradjusting the seedcctton in the -roll to the saws, and itwill also serveto regulate the density and pressure of the roll against the saws, sothat the latter may perform their proper functions with regularity andprecision, even with a slack or deficient roll. In this manner I preventthe roll from breakingor choking and obviate the attending dangers oflire and ofcutting the cotton or breaking the gin. VThe rollersconstituting the seed-cotton roll-box are driven or rotated by means ofa belt, a, ruiming from allpulley on the saw-shaft over pulleys b c onthe ends of the rollers ot' the front wall, pulleys b and c being angedto guide the belt, and over pulleys d in bracket S, bolted to the frameof the gin through slots therein, making the bracket adjustable for thepurpose of tightening belt c; or the brackets may be slotted for a likepurpose. The rollers over which the belt passes receive a positivemotion, and the others are driven by frictiona-l contact. Other meansthan those described may, however, be resorted to for operating therollers. The bottoni roller of the front wall of the inner rollbox isfitted in slots e, made in the headsotl the hood or cotton-box of thegin, so as to permit said roller to be adjusted for varying the spacebetween it and the knuckle portions ofthe ribs. The customarybreast-board, I, is arranged at the front of the hood or cottonbox, andat the bottom of said breast-board, or between it and the lower portionof the ginribs, I locate several rollers, J K, which are s i ewqsocdriven from the saw-shaft, all these rollers turning in the samedirection. The' object of these rollers Ais to hull the seed-cotton andthrow the hulls, trash, and other foreign matters from thecottonbox,.the greater portion of the discharge taking place over thetop of the roller adjoining the breast-board. The latter ismadeadjustable relatively to the roller i'or permitting thedischarge-passage to be ad- Io justed. An eccentric and a shaft withhandwheel are generally used for adjusting the breast-board. The hullingand trashdischarg ing rollers have heretofore been employed for thepurpose specified, buthave never been arranged in relation with aroll-box, the walls whereof are constructed of rollers as now proposed.

the breast-board, ribs, saws, and hulling and trash-dischargin grollers, arranged at the bottom of the outer roll-box, all substantiallyas shown and described, and for the purpose set forth.V

In testimony whereof I have hereunto set my hand in the presence of twosubscribing wit- 3o messes. f

Witnesses: JOHN D. MILBURN.

' JAMES L. NoRRIs,

J. A. RUTHERFORD.

